Power-transmitting mechanism.



No. 876,937. PATENTED JAN. 21, 1908- A. T. BROWN.

POWER TRANSMITTING MECHANISM.

APPLIGATION FILED SEPT. 6. 1904. 3 S SHEET 1.

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1%. 876,937} PATENTED'JAN. 21,1908.-

' I ART. BROWN POWER TRANSMITTING MEGHAHIS'M.

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PATENTED JAN. 21, 1908.

ll lllll A. T. BROWN. POWER TRANSMITTING MECHANISM.

APPLIUANTION FILED SBPT,6.1904

IIIIIIIIIIIIINI fl gguan imaam INVENTOR 1 @wM'v/mr ATTORNEYS use inself-pro lled vehicles, an

UNITED str trns PATENT: OFFICE.

ALEXANDER T. BROWN, or .sYRAcU'sn'NEw YORK, ASSIGNOR TO BROWN-LIFE GEAR COMPANY, OF SYRACUSE, NEW YORK, A GOPARTNERSHIP.

rownn-rnansm'r rme mscnamsiul Specification ofi 'l'ietters latent. Application filed September 6.1904. semi ii 223.371.

' Patented Jan. 21, 1908.

a certain new and useful Power-Transmitting Mechanism, of which the following is a speciseamen. j

vention relates .to power-transmit.-

tinggmecham'sm, particularly applicable for object the pro uction of a mechanism for the desired purpose which isespecially simple'in construction and highly efficient andd'urable in use and to this end, it consists in the novel combinations and constructions hereinafter set forth and pointed out in the claims.

In describing invention, reference is had to the accompanying drawings in which like characters designate. corresponding parts in all ef the views.

Figure 1 is a top 'plan of -a portion self propelled vehicle including one embodiment of my invention. Fig. 2 is a rear elevation,

partly in section, of the means shown in Fig.

1', a portion of th'e'body of the vehicle being also illustrated. Fig. :3 is an enlarged sectional viewpartly in elevation, on line A A, -Fig. 1, a part ofthe ground-wheel beingomitted. Fig. 4 is an enlarged sectional view, partly in elevation, on line B-B, Fig.

2. Fig. ,2, is a sectional view, partly in elevation, on line C-C, Fig. 4. Fig. 6 is a detail sectional view on line D-D, Fig. 5.

' The illustrated exemplification of this invention includes driven and driving-members, and equalizing "and transmitting gears. As best seen in Figs. 2 and 4, the driven members 1, 2 constitute an axle, are arranged end to end with the opposing ends of their -axes substantially coincident with each other,

and are inclined relatively to each other lengthwise of their axes from a' horizontal lane. The outer ends of the driven menihers 1, 2are equipped with ground-wheels 3,

4,.and their inner ends are provided with beingseparater and'formed with the teeth thereof. As shown, said inner ends of the driven members are provided w1th tapered ears 5, 6, the opposing surfacesof said peripheral surfaces 7 decreasing in diameter toward the end faces of said ends, and having lengthwise ribs thereon, and. said inner ends i has for its formed with taperedopenings 9 for receiving. and closely fitting the surfaces 7, saidopenings decreasing. in diameter toward their" inner ends and being provided with length wise ribs coacting. with the' corresponding ribs on the-surfaces 7. Suitable nuts 10 are adjustable lengthwise of the threaded surfaces 8, and engage the opposingportions of the inner faces of the gears.5,,6 for forcing said gears lengthwise of'the surfaces 7 toward the larger ends of said surfaces and firmly ecuri the gears. in position. Said nuts are,he l 'in'their adjusted position by any desirable retaining means, .as cotter-keys 11 assedthrough the webs'ofzthe gears 5, 6 and aving their inner ends detachably engaged with shoulders-provided on saidnut's.

;'The described means 'forsecuring the.

gears 5, 6. to the driven members permits of the ready detachment of saidigears when desired, but it is apparent that thesejgears may be otherwise fastened to the driven members,-

and hence I do not limit my invention to said securing means-which forms the subject matterof 'Iny divisional application.

The driving member 12 extends beyond opposite sides of the axes'of the driven members 1, 2' at an angle other than a right angle to said axes, is-fixed from movement laterally relatively to the driven members, and is interposed between the gears 5, 6. Said driving member preferably consists of a shaft which supports the equalizing and transmitting gears, and is connected to any suitable source ofpower, as an engine-shaft, not illustrated,;by a universal connection, one member 13 of said connection being secured to an end of the driving member in the same manner that the ears '5, '6 are fastened to the opposin ends '0? the driven-members, and said inein lier 13 beinglield in its adjusted position by a nut 14 screwing upon a threaded extremity of the member '12.

'In the illustrated embodiment of 'my iiivention, bevel equalizing gears 15, 16, 17, 18 are supported by the driving member 12 and rotate therewith, the gears 15, .16 being arranged to extend on opposite sides of the axes, of the driven members 1, 2, and with their axes at an angle to the axis of the driving member, and beii'igrevolub le on the-ii axes relatively to the driven and driving nieiiiare also provided with, threaded peripheral hers; and thegeai's 17 18 being i'evoiuble surfaces 8 adjacent the smaller ends 01 the relatively to the driving member about the 55 surfaces 7 and the hubsbf the gears 5, 6 are axis thereof, and being arranged at oppesite sides of the cars 15, 16 and the axes of the driven mem ers. Said e ualizing gears 15, 16 are-preferably mounte on trunnions 19, 20 pro ectm'iirom opposite sides of an enlargement o the dnvm member 12 interposed between the equa i'zing gears 17, 18, this enlargement having opposite surfaces thereof engaged with the opposing or inner end faces of the'gears 17, 18. Suitable collars 21, 22 are engaged with the e ualizing gears 15, 16 and are secured to th 23, arranged parallel with each .other, and provided at corresponding ends with heads engaged with the outer face of one of the collars, and at their other ends with threads engaging the opposite collar.

- The transmitting gears 24, 25 are preferably of similar size, are loosely mounted on the drivingmeinber 12 at opposite sides of the gears-15, 16 and the axesof the driven members 1,2, and are revcluble with the equalizing gears 17,18 relativelyto the driving member 12 about the axisthereof, being usually integral with. said equalizing gears 17, 1S. One side of the transmitting gear 24 meshes, atone side of the'axes of the driven members 1, -2.and "at one side of the axis of. the driving member 12, with the gear 5 on the driven member 1, and said gear 24 is disconnected from-the gear 6 on the driven member 2, andthe transmitting gear 25 meshes at the opposite side of the axes of the drive-n members 1' 2 and at the opposite side of the axis of the rivin member 12 with the gear 6 andjs disengage from said gear 5.

It will be apparent to those skilled, in the art, that equalizing anditransmittin ears constructed and arranged as describe orm a particularly compact, siniple eilicient, strong and durable connections} between the driven and driving members, 'aind that such connectionconsists of a minimum n'mber of parts, and when transmitting motion from the driving to the driven members, equalizes the strain on opposite sides. of the axes of said members, and also permits of the necessary differential movement of the dr'ven members. By inclining the driven memfl ers lengthwise of their axes from a horizontal plane, it is possible to incline the groundwheels relatively to a perpendicular as may be desired. It is apparent, however, thata the driven members maybe arranged with their axes in a horizontal plane. The inclination of the driving member from adine' at a right angle to the axes of the driven members facilitates the desired arrangement of the transmitting gears, but-I do not limit my invention to a such inclinatiom .In the illustrated embodiment of my me vention, the driven and driving members 1, 2, 12, are supported by a casing 30 comprlsing 'a central part and tubular shells or extenv e trunmons19, 20 by any desirable means, as pins cap 40 being provided with a centralopening drivmg' member having,

sions 31, 32. The central part of the casing 30 is provided with a detachable cap 33, and is formed with opposing side openings 34, 35 through which thedriven members 1, 2 project, these openings being inclined relatively to each other lengthwise of their axes fro] n a horizontal plane, and having their axes substantially coincident with the axes of the driven members 1, 2. Said tubular shells or extensions 31, 32 form continuations of the parts of the casing provided with the openings 34, 35, and encircle and support the driven members 1, 2, suitable anti-friction bearings 36, 37 for supporting the driven members 1, 2 being provided in the inner and outer ends of these extensions. The central part of the casing 3 0-is also provided with opposing tubular extensions 38, 39 arranged substantially. midway between the openings 34, 35 with their axes at an angle, other than a right angle, to theaxes of the openings 34, 35, these extensions having their outer ends provided with detachable caps 40, 41, the

42 through which the driving llltlllkl 12 projects, and the axis of this opening being substantially coincident with that of the driving member. :Suitable antiiriction bearings43, 44. are provided on thedriving member 12 and arranged in the tubular extensions 38, 39 of'the casing 30. Arsleeve 45 within the opening 42 engages the member 13 fixed to the driving member 12, and also engages means, as-a part of'the bearing 43 encircling the driving member 12 and engaging the outer end of the transmitting ge'arB-i. The

"corresponding'end of the transmitting gear 25 engages means, as a part'of the bearing 44 encircling the driying member 12 and on gaging a shoulder 46 fixed to the driving member, and adjustable toward and from the sleeve 45, and aswill be obvious to those skilled in the art the sleeve 45 and the shoulder 46 prevent endivise movement of the transmitting gears 24, 25 from each other. The described casing is simple in construction, and forms a particularly eiiicient moans for supporting and inc'asing the driven and driving -members and the equalizing and transmitting gears of my power-t ransm itting 'mechanism, but it is apparent that other for supporting and in- As best seen in Fig. 3, the

terminate in reduced periphcrnlly-tbreaded l sion with u gear, and plumgears carried by extremities 4.8. The iubs of the groundwhecls are mounted on the projecting (llflfl of the driven'nienibers 1, 2 at the outer sides of the tubular shells or extei'isions 31, 3-2, and are. each provided with inner and outer engaging surfaces 49, 50, the lattcrsurfnces being engaged by nuts 51 adjustable lengthwise of the extremities 48 of the driven inem- Q bets. Suitable caps 52 are ad ustable lengthwise of the outer ends of the hubs of the ground-wl'ieels, and are provided with inner surfaces engaging the end faces of the reduced threaded extremities 48 of the. driven members Sleeves 53 encircle the inner or opposing ends of the hubs of the groundwheels and the outer ends of the tubular shells or extensions 31, 32, being preferably provided with internal threads engaging corresponding threads on the shells or extensions '3-1, 32 for adjusting the sleeves 53 lengthwise of said shells or extensions. Locknuts 54 engage the opposing end faces of the sleeves 53 for holding said sleeves in their adjusted position, The inner faces of the sleeves 53 are provided with annular shoulders 55 arranged between the shoulders 47 and the engaging faces 49. Antifriction members, as balls'56, engage opposite sides of the shoulders 55 and the opposmg surfaces of bearing collars 57 58 having their opposite surfaces engaged respectively with the shoul den 47 and the surfaces 49. To those skilled in the art, it will be apparent that by varying the position of the nuts 51' and the caps 52, the ground-whee s are adjusted lengthwise of the driven members as desired,

.to the driven members.

The construction and operation of my power-transmitting mechanism will now be readily understood upon reference to the foregoing description and the accompanying drawings, and 1t will be apparent to those skilled in the art that moreor less change may be made in the component parts thereof without departing from the spirit of my mvention. Having thus fully described my invention, -what I claim as new and desire to secure by Letters Patent, is:

1. In a vehicle, a pair of axle sections, a

' driving gear secured to each of said sections,

a haft passing across the faces of said gears and inclining with respect to the planes thereof, pinions loosely carried on said shaft, each of said pinions having an extensnid shaft and meshing with the said extension gears. the said ,]lniol1s being on opposite sides of the nxlescctions and ouch nn-shing with one of the driving gears.

'2. In a vehicle, a pair of axle sections, a bevel driving gear secured to each of said sections, a shaft passing across the faces of said gears and inclining with respect to the planes thereof, bevel pinions loosely carried on said shaft, each of said pinions having an extension with a gear, av spider frame mounted on said shaft between the said pinions and turning with the shaft, and equalizing gears carried by said spider frame and meshing with the said gears on the said extensions, the said bevel pinions being on opposite sides of the axle sections,

and each. meshing with one. of the driving gears.

3. In a vehicle, a pair of axle sections, a bevel driving gear secured to each of said sectlons, said gears being ofv substantially equal diameters, a shaft passing across the faces of said gears and inclining with respect to the planes thereof, bevel pnnons loosely carried on said shaft, each of said pinions having an extension with a gear, a spider frame mounted on said shaft between the said pinions and turning with the. shaft, and equalizing gears carried by said spider frame and meshing with the said gears on the said extensions, the said bevel pinions being on opposite sides of the axle sections and each meshing with one of the driving. gears.- i

4. In a vehicle, a pair of axle sections, bevel gearsion the adjacent ends of said axle sections, said gears being of substantiallv equal diameters, a drive shaft section pass mg acrossthe faces of said gears and 'mchn' ing with respect to the planes thereof, a second drive shaft section, a universal connection between said drive shaft sections, a

arranged end to end, gears associated with,

the driven members and rotating therewith,

a bearing fixed from movement laterallyrelatively to the driven members, and a re'voluble driving member j ournaled in the hearing and connected-to said gears and arranged with its axis at an angle, other than arightangle, to the axes of said driven members, substantially as and forthe purpose set forth.

.6. In a vehicle, revoluble driven members arranged end to end and inclining relatively to each other lengthwise of their axes from a horizontal plane, and a revoluble driving .member connected to the driven members bearing fixed from movement laterally relatively to the driven members, and a. revoluble driving member journaled in the'bearing and connected to said gears and'arranged with its axis at an angle, other than a right substantially as an angle, to the axes 'of said driven members, substantially as and for the purpose specified. 8. In a vehicle, revoluble driven members arrangpd end to end and inclining relatively to eac other lengthwise of their axes froma horizontal plane, a ear associated with each of the driven mem ersand rotating therewith,'a revoluble driving member extending on opposite sides of the axes-of the driven members with its axis at an angle, other than a right-angle, to said axes, ears revoluble with the driving member an arrangedend to end ono posite sides ofthe axes of the driven mem ers and with their axes substantially coincident with the axis of the driving member, one of-the gears revoluble with the driving member being in mesh at one side of the axes of the driven 'members and at one side of the axis of the driving member with the gear on one of the driven members and out of mesh with the gear on the other driven member, and another of the gears revoluble with the driving member being in mesh at the opposite side of the axes of the driven members and at the opposite side of the axis of the driving member with the gear on said other driven member and out of mesh with the gear on theo osing driven member, fbr the purpose set forth.

9. In a vehicle, revoluble driven ears of substantially equal diameter arrange end to end, transmitting gears arranged on opposite sides of the axes of the driven gears with their axes at an angle, other than a right an- .gle, to the first-mentioned axes, one of the transmitting gears being in mesh with one of the driven gears and out of mesh with the other driven gear, and the other transmit ting gear being in mesh with said other driven gear and out of mesh with the opposing driven gear, and equalizing gears connecting the transmitting gears, substantially as and for the purposedescribed.

10. In a vehicle, an axle comprising a pair of revoluble shafts arranged end to end,

ound-wheels carried by the outer ends of the shafts, gears of substantially equal diameter provided on the inner ends of the shafts,

ing member, an

a driving member arranged with its :axis at. i

one of the shafts and out of meshwith the' gear on the other shaft, a second gear revoluble with the driving member and being in mesh with the gear on said other shaft and out of mesh with the gear meshing with the first-mentioned gear revoluble with the drivthe driving member and connected to said gears revoluble with the driving member, substantially as and for the purpose set forth.

11. Ina vehicle, an axle comp-rising a pair of revoluble shafts arranged end to end and equalizing gears carried by inclining relatively to each other lengthwise of their axes from a horizontal plane, groundwheels carried by the outer ends of the shafts, gears of substantially equal diameter provided on the inner ends of the shafts, a drivmember arranged with its axis at an angle, other than a ri ht angle, to said shafts, transmitting gears oosely mounted on the driving member on opposite sides of the axes of the shafts, one of the transmitting gears being in mesh with one of the first-mentioned gears and out of mesh withthe other'of the first-mentioned gears, and the other transgear being in mesh with said other of the first-mentioned gears and out of. mesh with the opposing first-mentioned. gear, and equalizing gears carriedrby the driving member and connected to-said transmit-ting gears, substantially as and for the purpose specified. 12. Iii a vehicle, revoluble driven gears arranged end to end, a driving member arranged with its axis at an angle other than a right angle'to the axes of the driven gears, equalizing gears, one of the equalizing gears being revoluble with the driving member and arranged with its axis at an angle to the axis of the drivi member, said one of the equalizing gears ein relatively to the riven gears and the driving member, and a plurality of the equalizing ears being revoluble with the driving member and arranged with their axes at an angle to the axis of said one of the equalizing gears, and a pluralit of transmitting gears revoluble with the riving member and with said plurality of equalizing gears and being in mesh wlth the driven gears, substantially as and for the purpose set forth.

13. In a vehicle, revoluble driven gears arranged end to end, and inclining relatively to revoluble about its axisluble with the driving member and extending on opposite sides of the axes of the driven gears, said one of the equalizing gears being.

35 at one side of the axis of the driving member gears and being in mesh with the driven gears, substantially as and for the purpose described' 14. In a vehicle, revoluble driven gears arranged end to end, a driving member extending on opposite sides of the axes of the driven gears with its axis at an angleother than a right angle to said axes, equalizing gears connected between the driven gears,

one of the equalizing gears being revo luble with the driving member and extending on opposite sides of the axes of the driven gears, said one of the equalizing gears being arranged with its axis at an angle to the axis of the driving member and being revoluble on its axis relatively to the driven gears and the driving member, and a pair of the equalizing gears coacting with said one of the equalizing gears and-being revoluble with the driving member, and revoluble relatively thereto about the axis of said driving member, and transmitting gears fixed respectively to said pair of equalizing gears,

/ one of the transmittmg gears being in mesh at one side of the axes of the drivengears and with one of the driven gears and out of mesh with the other driven gear, and the other transmitting gear being in'mesh atv the opposite side of the axes of the driven gears and at the opposite side of the axis of the driving member with said other driven gem and out of mesh with. the opposingdriven gear,

substantially as and for the purpose described.

15. In a vehicle, two revoluble. driven gears arranged end to end, a driving member, a gear revoluble with the driving member and being in mesh at one side of the axes of the driven gears with one of the driven gears and out of mesh with the other driven gear, a second gear revoluble with the driving member and bein in mesh at the opposite side of the axes of the driven gears with said other driven gear and out of mesh with the first-mentioned gear revoluble with the driving member, and means provided on the driving member at o posite sides of the gears revoluble with sai member, such means preventing endwise movement of said gears from each other and being revo1u-- ble with the driving member, substantially as and for the urpose described;

16. In a v 'cle, two revoluble;- driven gears arranged end to end, a driving memner ends of ,the driven. members, 'wheels'cgnnected to the other ends of the means preventing endwise movement of said gears from each other and comprising two parts revoluble with the driving member, one of said parts being adjustable toward and from-the other, substantially as and for the purpose set forth.

17. In a vehicle, an axle comprising a pair of revoluble shafts arranged end to end,

ground-wheels carried by the outer ends 0 the shafts, gears of substantially equal diameter provided on the inner ends of the shafts, a driving member arranged with its axis at an angle, other than a right angle, to said shafts, a gear revoluble with the. driving member and hem in mesh'with the gear on one of the s ha'ts and outof mesh with the gear on the. other shaft, a second gear revoluble with the driving member andbe ing in mesh with thegear on said other shaft and out of mesh with the gear meshing with the first-mentioned gear revoluble with the driving member, equalizing gears carried by the driving member and connected to said gears revoluble with the driving member, andmeans provided on the driving member at opposite sides of said gears revoluble with the driv ng memberand meshing with the first-mentioned gears, such means prevent-v ing endwise movement of said gears revoluble with the driving member, one of said parts being adjustable toward and from the other, substantially as and for the purpose specified.

, 18. In a vehlcle, a casing provided with opposing openings inclining relatively to each other lengthwise of their axes from a horizontal plane, driven members revoluble in the openings and arranged with their axes substantially coincident with the axes of said openings, and driving means .within the easing for. cooperating with the driven members, substantially as and for the purpose set forth.

19. In a vehicle, a'casing provided with o posing openings and with tubular shells aEned with the openings and having their axes vsubstantially coincident with the axes of said openings, driven members revoluble in said openings, and tubular shells and arranged with their axes substantially coincident with the axes; thereof, driving means within the casing for cooperating with the ingroundpose desorib'ert driven members, and means coacting with. the tubular shells and the ground-wheels for preventing the entrance ofdust to the driven members, substantially as and for the pur- 20. In a vehicle, a casing provided with opposing. openings and with projecting tubu-' lar shells alined with the openings, an axle comprisin a pair of revoluble shafts arranged, respectrve y, in thetubular shells, gears of substantially equal. diameter provided within the casing on the inner ends of the shafts, a member arranged with its axis at an angle, other than a right angle, to said shafts,

a' ge-afiwithin the casing revoluble with the driving member and being in mesh \with the gear on" one ofthe shafts and out of mesh with I fi-the gear on the other shaft, a second gear within'ltheacasing revoluble with the driving member and being in mesh with the gear on said other shaft and out of mesh with the gear tranceof dust to the revoluble shafts, substantially as and for the purpose set forth.

21..In a vehicle, a casing provided with opposing openings and with tubular shells alined with the openings and having their axes substantially coincident with the axes of said openings, driven members revoluble in said openings and tubular shells, and arranged with their axes substantially coincident with the axes thereof, means engaging the tubular shells and movable relatively thereto for adjusting the riven members len thwise relatively to said tubular shells,

' an [driving means within the casing for cooperating with the driven members, substantially as and for the purpose described. I

22. In a vehicle, a casing provided with opposing openings inclined relatively to each other'lengthwise of their axes from a horizontal plane and also provided with tubular. shells alined with the o posing op'en ings and having their axes su stantially coincident With the axes of said op enin s, driven members revoluble in said vopenifigs and tubular shells, and arranged with their axes substantially coincident with the axes thereof, means for adjustingv the driven members lengthwise relatively to said. tubular shells, and driving means within the easingfor cooperating witta the driverr members, substantially as and for the purpose described. p

23. .In .a vehicle, a casingproyided with opposin openings, andwith a third opening arrange substantiall midway between the opposing openings, riven members journaled in the o posing openings, a driving member journa ed in the third opening and arranged with its axis at an angle, other than a right angle, to theaxes of the driven'members, and power-transmitting means'within the casing connecting the driven and driving members, substantially; as and for the purpose specified.

24.,1In a vehicle, a casing provided with opposing openings, and with a third opening arranged substantially midway between the opposing openings, anaxle comprising a pair of revoluble shafts journaled, respectively, in the openings, ground-wheels carried by the outer ends of the lshafts, gears of substantially equal diameter provided within the casing on the inner ends of the shafts,- a driving member journaledin the third opening and arranged with its axis at an angle, other than a right angle, to said sliafts, a gear within the casing revoluble with the driving member and being in meshwith the gear on one of the shafts and out of mesh with the gear on the other shaft, a second gear within the casing revoluble with the driving member and being in mesh with the gear on said other shaft and out of mesh with the gear meshing with the first-mentioned gear revoluble with the driving mimber, and equalizing ge arswithin the casing carried by the driving member and connected to said gears revoluble with the driving member. substantially as and for the purpose described.

25. In a vehicle, a casing provided with opposing o enings inclining relatively to each other engthwise of their axes from a horizontal plane,--and with a third opening arranged substantially midway between the opposing openings with its axis at an angle, other than a right-angle,- to the axes of the o posing openings, driven members revolub e in the opposing openings and arranged with their axes substantially coincident with the axes of said opposing o )enings, adriving member revoluble in the third opening with its axis substantially coincident with the axis of said third opening, and power-trailsmitting means within the casing connect: the driven and driving members, substantially as and for the purpose specified.

26. In a vehicle, the combination with a casing provided with opposing o enings, a'

third opening arranged s stantial y midway between the,.opposing openings at oneside of the axes of said opposing openings, and a bearing opposite to the third opening at the opposite side of the axes of said 0 o enings; of driven members revo u le 1n tie opposing openings, a driving member projecting through the thirdo'pening and supported by said bearing, and power-transmitting means ithin the casing connecting the driven anddriving members, substantially as and for ,the purpose set forth.

osing 27. In a vehicle, the combinationwith a casing provided with opposing openings and the last-mentioned opening and provided with bearings supported by the opposing lateral extensions, and power transmitting means within the casing connecting the' driven and driving members, substantially as and for the purpose described.

28. In a vehicle, the combination with a casing provided with opposing openings, and a third opening arranged substantially midway between the o posing openings; of

driven members revo uble in the opposing openings, a driving member revoluble 1n the third opening, gears within the casing mounted on the driving member and cooperating with said driven and driving members, means on the driving member for preventing endwise movement of said gears in one direc-.

tion, a sleeve in ,the opening for preventing endwise movement o'f'the gears in the other direction,and means on the driving member coacting with said sleeve, substantially as and for the purpose specified.

In testimony whereof, -'I have hereunto signed m name in the presence of two at-'.

testing witnesses, at Syracuse, in the count of Onondaga, in the State of New York, thl 3rd day of September, 1904.

ALEXANDER T; BROWN Ji itnesses:

' DPLAVINE,

, ARTHUR E. PARSONS. 

